Abstract
Attempts to reduce anomalous eddy current losses by means of domain refinement are usually performed on single crystals or polycrystalline single sheets. However, studies on stacked sheets reported in this paper showed that arranging the single sheet into a stack may result in a refinement of large 180 degree domains without additional treatments such as scratching. On the other hand, an example is shown which demonstrates that stacking of scratched sheets may result in a distinct widening of domains previously refined by scratches. It can be concluded that single sheet investigations concerning the ac demagnetized domain patterns are of restricted practical relevance.
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